Re: [Discuss-gnuradio] Gnuradio locking up

[Matt Mills]

It appears UHD does not like to be watched; reproducibly if I run with GDB attached, UHD eventually stops sending data to the upstream blocks and my screen fills up with:

thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error
thread[single-threaded-scheduler]: RuntimeError: Control channel send error

if I run it without GDB attached, it segfaults.

On Wed, Nov 23, 2011 at 9:44 AM, Tom Rondeau <address@hidden> wrote:

Since it's a segfault, I just added this to the FAQ on the wiki to explain how to get more information:

http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#How-do-I-debug-GNU-Radio-in-Python

Post the output of the backtrace to help us find out what's going wrong.

Tom